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Diffstat (limited to 'sound')
-rw-r--r--sound/core/timer.c18
1 files changed, 15 insertions, 3 deletions
diff --git a/sound/core/timer.c b/sound/core/timer.c
index fc144f43faa6..ad153149b231 100644
--- a/sound/core/timer.c
+++ b/sound/core/timer.c
@@ -1702,9 +1702,21 @@ static int snd_timer_user_params(struct file *file,
return -EBADFD;
if (copy_from_user(&params, _params, sizeof(params)))
return -EFAULT;
- if (!(t->hw.flags & SNDRV_TIMER_HW_SLAVE) && params.ticks < 1) {
- err = -EINVAL;
- goto _end;
+ if (!(t->hw.flags & SNDRV_TIMER_HW_SLAVE)) {
+ u64 resolution;
+
+ if (params.ticks < 1) {
+ err = -EINVAL;
+ goto _end;
+ }
+
+ /* Don't allow resolution less than 1ms */
+ resolution = snd_timer_resolution(tu->timeri);
+ resolution *= params.ticks;
+ if (resolution < 1000000) {
+ err = -EINVAL;
+ goto _end;
+ }
}
if (params.queue_size > 0 &&
(params.queue_size < 32 || params.queue_size > 1024)) {